Door-check



(ModeL) T. B. MGCURDY.

I 13003 CHECK. No. 280,055. Patented June 26, 1883.

INVENTOR I WITNESSES r T BY - ATTORNEYS.

is connected by suitable rods and levers with O, surrounding the saidbolt.

UNITED STATES PATENT OFFICE.

THOMAS B. MGCURDY, OF LANCASTER, TEXAS.

DOOR-CHECK.

SPECIFICATION forming part of Letters Patent No. 280,055, dated June 26,1883.

Application filed April 23, 1883. (Model) To all whom it may concern Beit known that I, THOMAS B. McGURDY, of Lancaster, county of Dallas,Texas, have invented a new and Improved Door-Holder, of which thefollowing is a full, clear, and exact description.

The object of my invention is to provide a new and improved device forholding a door opened to a greater or less extent, and for also holdingit closed.

The invention consists in a sliding springbolt held in the upper edge ofthe door, combined with a curved notched frame projecting from thedoor-frame, into the notches of which frame the end of the bolt can passto hold the door in the desired position. The sliding bolt a crank-armformed on one end of a spindle, provided on the opposite end with ahandleknob, the crank-arm of which spindle can be adjusted to lock thespring-bolt so that the same will not operate.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a front elevation of a door pro- Vided with my improvedholder, parts of the door being broken out, and the door being shownclosed. Fig. 2 is a sectional plan view of the same, the door beingshown partly opened. Fig. 3'is a detail cross-sectional elevation of theknob part of my improved doorholder 011 the line a: m, Fig l; and Fig. 4is an inner face view of the plate behind the knob.

The door A is provided with a longitudinal groove, A, in its upper edge,and with a recess, A, in the swinging edge. In the groove A a slidingbolt, B, is held, which is pressed toward the hinged edge of the door bya spring,

That end of the bolt toward the swinging end of the door is connected bya wire or rod, D, with one shank of an elbow-lever, E, pivoted in theupper part of the recess A", which elbow-lever has its other endconnected by a rod, F,

with a crank-arm, G, formed on the inner end of a spindle, H, journaledin a plate, J, held on the door, which spindle is provided at its outerend with a knob, K. A check-lug, L, projects from the inner surface ofthe plate J diagonally above the spindle. The crank-ar1n G is providedwith an arm, M, adapted to strike against the end of the check-lug. Asemicircular horizontal frame, N, secured to the top of the door-frame,is provided in its outer circular edge with a series of notches, (1,adapted to receive the end of the bolt B. The frame N projects from thatside of the doorframe from which the door opens, and the center'of theframe corresponds with the central axis of the hinges. The frame Npasses through the inner end of the groove A.

, If the door is to be opened, the handle-knob K is turned, whereby therod F is drawn downward, and the end of the bolt B is drawn from theedge of the frame N. As soon as the knob K is released, the end of thebolt 13 snaps into the nearest notch, a, and holds the door in theposition it has at the time.

If it is desired to adjust the sliding bolt B in such a manner that itcannot lock the door, the knob K is turned until the arm G has beenturned down and beyond the center. The spring 0 will have the tendencyto draw it up and to complete its rotation in the direction of the arrowto; but thereby the end of the arm M will come in contact with thechecklug L, and will thus prevent the bolt 13 from being pushed by thespring 0 into the notches a, and the door can be opened and closedwithout being locked by the bolt B. If the bolt B is to operate, the armG must be turned in the reverse direction of the arrow to until it isbeyond the center. Then the door is closed or locked, the edge of thebolt rests on the edge of the frame, but is not in a notch in the edgeof the frame.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. The combination, with the notched segment N,fastened at the top of the door-frame, of the spring-bolt 13, adapted toslide in a groove, A, in the upper edge of the door, the rods D F,connected together by the elbow E and arranged in the recess A in theswinging edge of the door, the crank-arm G, having the arm M,knob-spindle H, and stop. L, substantially as and for the purpose setforth.

IOO

2. The combination, with a door, of a slid-,- as herein shown anddescribed, and for the ing bolt in the upper edge of the same, thepnrposeset forth.

curved notched frame N the )late J havin H V T a curved 111g, L, on itsinner su rfaoe, the spin lHOMAS CURDS 5 dle A, having a knob, K, andalso it oi'ank- \Vitnesses:

arm, G, connected with the sliding bolt, and O. M. LYON,

provided with a curved arm, M, substantially E. T. KING.

